Densities, viscosities and excess properties of binary liquid mixtures of methyl tert-butyl ether with methanol and diisopropyl ether from 308.15 to 318.15 K at 0.1 MPa

Abstract

ABSTRACT Densities and viscosities of binary mixtures for methyl tert-butyl ether (MTBE) with methanol and diisopropyl ether (DIPE) have been measured at temperatures of 308.15, 313.15 and 318.15 K and at atmospheric pressure over the entire composition range. The measured densities and viscosities were fitted using Jouyban-Acree model where mean relative deviation (MRD) lesser than 0.02% are obtained for both predictions. The excess molar volumes and the viscosity deviations are calculated from measured densities and viscosities. Redlich-Kister equation is then used to correlate excess molar volumes and viscosity deviations where good fits have been achieved. Negative excess molar volume and viscosity deviation have been obtained for binary mixture MTBE + methanol at all investigated temperatures which indicating the presence of chemical and structural interactions. However, lack of specific interactions has been observed for binary mixture MTBE + DIPE based on positive excess molar volume and small negative values of viscosity deviation.